How to design a cardboard box?

A packaged software that can design packing box expanded view efficiently, design the 3D effect. So I just download a box from the library of Packamge CAD,less than half a minute,I quickly generated the dimension expended view I wanted.
I learned the operation of the video tutorial website.

As following:

First of all: pick a box template in the box library.
Then, value: L = 310, W=195, D = 55 (mm), etc.
Next, click the “save” button, you can generate the DXF format which can be used for making cutting die, it is convenient for later printing needs.
Fourth, put the design draft posted on the template,make the size correctly.And click “OK” button.As shown in Figure :
Fifth, click on 3D and enjoy your own design now.
This softwrae can also save all figures by pressing “F4” on your keyboard. Finally I just simply process it in PS,a packaging design is completed.
Removing the time of the draft,I only spent half an hour!Such kind of thing has never happened before in my whole career. This is really the time you need to say “yes”.